The Wagaman family bought 4 cheeseburgers and 3 orders of fries for a total of $10.75. The Petry family bought 5 cheeseburgers a
nd 2 orders of fries for a total of $11.25. Write and solve a system to find the cost of a single cheeseburger and single order of fries.
1 answer:
Answer:
A single cheeseburger order cost $1.23
A single fries order cost $1.28
Step-by-step explanation:
Let the cost of cheeseburgers be c and the cost of fries be f
Mathematically;
4c + 3f = 10.75 ••••(i)
Secondly;
5c + 2f = 11.2 ••••(ii)
We have two equations to solve simultaneously;
Multiply i by 2 and ii by 3
8c + 6f = 21.5
15c + 6f = 33.6
Subtract ii from i
-7c = -12.1
c = 1.73
Recall;
5c + 2f = 11.2
5(1.73) + 2f = 11.2
2f = 11.2-8.65
2f = 2.55
f = 2.55/2
f = 1.28
You might be interested in
So 6 is to 9
6:9
16 is to x
16:x
they are eual so change to fraction and solve
6/9=16/x
multiply both sides by x
6x/9=16
multil yboth sides y 9
6x=144
divide by 6
x=24
answer is 24 hours
The last line of a proof represents the conclusion.
It would be $2.5.
5/2 = 2.5$
I think route 3 c not sure tho